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junkdog/update-alternatives-clang.sh

Created November 18, 2017 20:29
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update-alternatives-clang.sh
#!/usr/bin/env bash
# --slave /usr/bin/$1 $1 /usr/bin/$1-\${version} \\
function register_clang_version {
local version=$1
local priority=$2
update-alternatives \
--install /usr/bin/llvm-config llvm-config /usr/bin/llvm-config-${version} ${priority} \
--slave /usr/bin/llvm-ar llvm-ar /usr/bin/llvm-ar-${version} \
--slave /usr/bin/llvm-as llvm-as /usr/bin/llvm-as-${version} \
--slave /usr/bin/llvm-bcanalyzer llvm-bcanalyzer /usr/bin/llvm-bcanalyzer-${version} \
--slave /usr/bin/llvm-cov llvm-cov /usr/bin/llvm-cov-${version} \
--slave /usr/bin/llvm-diff llvm-diff /usr/bin/llvm-diff-${version} \
--slave /usr/bin/llvm-dis llvm-dis /usr/bin/llvm-dis-${version} \
--slave /usr/bin/llvm-dwarfdump llvm-dwarfdump /usr/bin/llvm-dwarfdump-${version} \
--slave /usr/bin/llvm-extract llvm-extract /usr/bin/llvm-extract-${version} \
--slave /usr/bin/llvm-link llvm-link /usr/bin/llvm-link-${version} \
--slave /usr/bin/llvm-mc llvm-mc /usr/bin/llvm-mc-${version} \
--slave /usr/bin/llvm-mcmarkup llvm-mcmarkup /usr/bin/llvm-mcmarkup-${version} \
--slave /usr/bin/llvm-nm llvm-nm /usr/bin/llvm-nm-${version} \
--slave /usr/bin/llvm-objdump llvm-objdump /usr/bin/llvm-objdump-${version} \
--slave /usr/bin/llvm-ranlib llvm-ranlib /usr/bin/llvm-ranlib-${version} \
--slave /usr/bin/llvm-readobj llvm-readobj /usr/bin/llvm-readobj-${version} \
--slave /usr/bin/llvm-rtdyld llvm-rtdyld /usr/bin/llvm-rtdyld-${version} \
--slave /usr/bin/llvm-size llvm-size /usr/bin/llvm-size-${version} \
--slave /usr/bin/llvm-stress llvm-stress /usr/bin/llvm-stress-${version} \
--slave /usr/bin/llvm-symbolizer llvm-symbolizer /usr/bin/llvm-symbolizer-${version} \
--slave /usr/bin/llvm-tblgen llvm-tblgen /usr/bin/llvm-tblgen-${version}
update-alternatives \
--install /usr/bin/clang clang /usr/bin/clang-${version} ${priority} \
--slave /usr/bin/clang++ clang++ /usr/bin/clang++-${version} \
--slave /usr/bin/asan_symbolize asan_symbolize /usr/bin/asan_symbolize-${version} \
--slave /usr/bin/c-index-test c-index-test /usr/bin/c-index-test-${version} \
--slave /usr/bin/clang-check clang-check /usr/bin/clang-check-${version} \
--slave /usr/bin/clang-cl clang-cl /usr/bin/clang-cl-${version} \
--slave /usr/bin/clang-cpp clang-cpp /usr/bin/clang-cpp-${version} \
--slave /usr/bin/clang-format clang-format /usr/bin/clang-format-${version} \
--slave /usr/bin/clang-format-diff clang-format-diff /usr/bin/clang-format-diff-${version} \
--slave /usr/bin/clang-import-test clang-import-test /usr/bin/clang-import-test-${version} \
--slave /usr/bin/clang-include-fixer clang-include-fixer /usr/bin/clang-include-fixer-${version} \
--slave /usr/bin/clang-offload-bundler clang-offload-bundler /usr/bin/clang-offload-bundler-${version} \
--slave /usr/bin/clang-query clang-query /usr/bin/clang-query-${version} \
--slave /usr/bin/clang-rename clang-rename /usr/bin/clang-rename-${version} \
--slave /usr/bin/clang-reorder-fields clang-reorder-fields /usr/bin/clang-reorder-fields-${version} \
--slave /usr/bin/clang-tidy clang-tidy /usr/bin/clang-tidy-${version} \
--slave /usr/bin/lldb lldb /usr/bin/lldb-${version} \
--slave /usr/bin/lldb-server lldb-server /usr/bin/lldb-server-${version}
}
register_clang_version $1 $2
@hasufell
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hasufell commented Dec 9, 2022 •
edited

...

master="clang"
slaves="analyze-build asan_symbolize bugpoint c-index-test clang++ clang-apply-replacements clang-change-namespace clang-check clang-cl clang-cpp clangd clang-doc clang-extdef-mapping clang-format clang-format-diff clang-include-fixer clang-linker-wrapper clang-move clang-nvlink-wrapper clang-offload-bundler clang-offload-packager clang-offload-wrapper clang-pseudo clang-query clang-refactor clang-rename clang-reorder-fields clang-repl clang-scan-deps clang-tidy count diagtool dsymutil FileCheck find-all-symbols git-clang-format hmaptool hwasan_symbolize intercept-build ld64.lld ld.lld llc lld lldb lldb-argdumper lldb-instr lldb-server lldb-vscode lld-link lli lli-child-target modularize not obj2yaml opt pp-trace run-clang-tidy sancov sanstats scan-build scan-build-py scan-view split-file UnicodeNameMappingGenerator verify-uselistorder wasm-ld yaml2obj yaml-bench"

update_alternatives "${version}" "${priority}" "${master}" "${slaves}" "${path}"

This is the only correct one. The others are all missing opt, llc etc. Not sure how those users got their toolchain working without it.

@ppigazzini
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This is the only correct one. The others are all missing opt, llc etc. Not sure how those users got their toolchain working without it.

To be honest the original script is 5 years old, but still a great reference. I wrote my version two months ago checking the differences on a clean Ubuntu before and after installing clang-15 llvm-15.

@miguno
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miguno commented Nov 4, 2023

Thanks @ppigazzini. Your script at https://gist.github.com/junkdog/70231d6953592cd6f27def59fe19e50d?permalink_comment_id=4336074#gistcomment-4336074 seems to work out-of-the-box on Debian 12, too.

@StatusCode404
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StatusCode404 commented Nov 5, 2023 •
edited

This is the only correct one. The others are all missing opt, llc etc. Not sure how those users got their toolchain working without it.

To be honest the original script is 5 years old, but still a great reference. I wrote my version two months ago checking the differences on a clean Ubuntu before and after installing clang-15 llvm-15.

Yeah I've had to update my script as well over the years, this is what I'm using now a days with LLVM 15.0.7.

This is on Ubuntu 22.04+ Builds Linux kernel with LTO.

#!/usr/bin/env bash

#     --slave /usr/bin/$1 $1 /usr/bin/$1-\${version} \\

function register_clang_version {
    local version=$1
    local priority=$2

    update-alternatives \
       	--verbose \
        --install /usr/bin/llvm-config          llvm-config          /usr/bin/llvm-config-${version} ${priority} \
        --slave   /usr/bin/llvm-ar              llvm-ar              /usr/bin/llvm-ar-${version} \
        --slave   /usr/bin/llvm-as              llvm-as              /usr/bin/llvm-as-${version} \
        --slave   /usr/bin/llvm-bcanalyzer      llvm-bcanalyzer      /usr/bin/llvm-bcanalyzer-${version} \
        --slave   /usr/bin/llvm-c-test          llvm-c-test          /usr/bin/llvm-c-test-${version} \
        --slave   /usr/bin/llvm-cat             llvm-cat             /usr/bin/llvm-cat-${version} \
        --slave   /usr/bin/llvm-cfi-verify      llvm-cfi-verify      /usr/bin/llvm-cfi-verify-${version} \
        --slave   /usr/bin/llvm-cov             llvm-cov             /usr/bin/llvm-cov-${version} \
        --slave   /usr/bin/llvm-cvtres          llvm-cvtres          /usr/bin/llvm-cvtres-${version} \
        --slave   /usr/bin/llvm-cxxdump         llvm-cxxdump         /usr/bin/llvm-cxxdump-${version} \
        --slave   /usr/bin/llvm-cxxfilt         llvm-cxxfilt         /usr/bin/llvm-cxxfilt-${version} \
        --slave   /usr/bin/llvm-diff            llvm-diff            /usr/bin/llvm-diff-${version} \
        --slave   /usr/bin/llvm-dis             llvm-dis             /usr/bin/llvm-dis-${version} \
        --slave   /usr/bin/llvm-dlltool         llvm-dlltool         /usr/bin/llvm-dlltool-${version} \
        --slave   /usr/bin/llvm-dwarfdump       llvm-dwarfdump       /usr/bin/llvm-dwarfdump-${version} \
        --slave   /usr/bin/llvm-dwp             llvm-dwp             /usr/bin/llvm-dwp-${version} \
        --slave   /usr/bin/llvm-exegesis        llvm-exegesis        /usr/bin/llvm-exegesis-${version} \
        --slave   /usr/bin/llvm-extract         llvm-extract         /usr/bin/llvm-extract-${version} \
        --slave   /usr/bin/llvm-lib             llvm-lib             /usr/bin/llvm-lib-${version} \
        --slave   /usr/bin/llvm-link            llvm-link            /usr/bin/llvm-link-${version} \
        --slave   /usr/bin/llvm-lto             llvm-lto             /usr/bin/llvm-lto-${version} \
        --slave   /usr/bin/llvm-lto2            llvm-lto2            /usr/bin/llvm-lto2-${version} \
        --slave   /usr/bin/llvm-mc              llvm-mc              /usr/bin/llvm-mc-${version} \
        --slave   /usr/bin/llvm-mca             llvm-mca             /usr/bin/llvm-mca-${version} \
        --slave   /usr/bin/llvm-modextract      llvm-modextract      /usr/bin/llvm-modextract-${version} \
        --slave   /usr/bin/llvm-mt              llvm-mt              /usr/bin/llvm-mt-${version} \
        --slave   /usr/bin/llvm-nm              llvm-nm              /usr/bin/llvm-nm-${version} \
        --slave   /usr/bin/llvm-objcopy         llvm-objcopy         /usr/bin/llvm-objcopy-${version} \
        --slave   /usr/bin/llvm-objdump         llvm-objdump         /usr/bin/llvm-objdump-${version} \
        --slave   /usr/bin/llvm-opt-report      llvm-opt-report      /usr/bin/llvm-opt-report-${version} \
        --slave   /usr/bin/llvm-pdbutil         llvm-pdbutil         /usr/bin/llvm-pdbutil-${version} \
        --slave   /usr/bin/llvm-PerfectShuffle  llvm-PerfectShuffle  /usr/bin/llvm-PerfectShuffle-${version} \
        --slave   /usr/bin/llvm-profdata        llvm-profdata        /usr/bin/llvm-profdata-${version} \
        --slave   /usr/bin/llvm-ranlib          llvm-ranlib          /usr/bin/llvm-ranlib-${version} \
        --slave   /usr/bin/llvm-rc              llvm-rc              /usr/bin/llvm-rc-${version} \
        --slave   /usr/bin/llvm-readelf         llvm-readelf         /usr/bin/llvm-readelf-${version} \
        --slave   /usr/bin/llvm-readobj         llvm-readobj         /usr/bin/llvm-readobj-${version} \
        --slave   /usr/bin/llvm-rtdyld          llvm-rtdyld          /usr/bin/llvm-rtdyld-${version} \
        --slave   /usr/bin/llvm-size            llvm-size            /usr/bin/llvm-size-${version} \
        --slave   /usr/bin/llvm-split           llvm-split           /usr/bin/llvm-split-${version} \
        --slave   /usr/bin/llvm-stress          llvm-stress          /usr/bin/llvm-stress-${version} \
        --slave   /usr/bin/llvm-strings         llvm-strings         /usr/bin/llvm-strings-${version} \
        --slave   /usr/bin/llvm-strip           llvm-strip           /usr/bin/llvm-strip-${version} \
        --slave   /usr/bin/llvm-symbolizer      llvm-symbolizer      /usr/bin/llvm-symbolizer-${version} \
        --slave   /usr/bin/llvm-tblgen          llvm-tblgen          /usr/bin/llvm-tblgen-${version} \
        --slave   /usr/bin/llvm-undname         llvm-undname         /usr/bin/llvm-undname-${version} \
        --slave   /usr/bin/llvm-xray            llvm-xray            /usr/bin/llvm-xray-${version}
        

    update-alternatives \
       	--verbose \
        --install /usr/bin/clang					clang					/usr/bin/clang-${version} ${priority} \
        --slave   /usr/bin/clang++					clang++					/usr/bin/clang++-${version}  \
        --slave   /usr/bin/clang-format				clang-format			/usr/bin/clang-format-${version}  \
        --slave   /usr/bin/clang-cpp				clang-cpp				/usr/bin/clang-cpp-${version} \
        --slave   /usr/bin/asan_symbolize			asan_symbolize			/usr/bin/asan_symbolize-${version} \
        --slave   /usr/bin/bugpoint					bugpoint				/usr/bin/bugpoint-${version} \
        --slave   /usr/bin/dsymutil					dsymutil				/usr/bin/dsymutil-${version} \
        --slave   /usr/bin/lld						lld						/usr/bin/lld-${version} \
        --slave   /usr/bin/ld.lld					ld.lld					/usr/bin/ld.lld-${version} \
        --slave   /usr/bin/lld-link					lld-link				/usr/bin/lld-link-${version} \
        --slave   /usr/bin/llc						llc						/usr/bin/llc-${version} \
        --slave   /usr/bin/lli						lli						/usr/bin/lli-${version} \
        --slave   /usr/bin/obj2yaml					obj2yaml				/usr/bin/obj2yaml-${version} \
        --slave   /usr/bin/opt						opt						/usr/bin/opt-${version} \
        --slave   /usr/bin/sanstats					sanstats				/usr/bin/sanstats-${version} \
        --slave   /usr/bin/verify-uselistorder		verify-uselistorder		/usr/bin/verify-uselistorder-${version} \
        --slave   /usr/bin/wasm-ld					wasm-ld					/usr/bin/wasm-ld-${version} \
        --slave   /usr/bin/yaml2obj					yaml2obj					/usr/bin/yaml2obj-${version}
        
}

register_clang_version $1 $2

@ShangjinTang
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ShangjinTang commented Jan 25, 2024 •
edited

There are plenty llvm related tools (more than 100).

I‘ve wrote a script to glob all llvm tools instead of manually specify them , tested on Ubuntu 22.04 x86_64.

It would automatically glob all the tools in /lib/llvm-${VERSION} as slave commands of /usr/bin/clang-{VERSION}

See: https://github.com/ShangjinTang/dotfiles/blob/05ef87daae29475244c276db5d406b58c52be445/linux/ubuntu/22.04/bin/update-alternatives-clang

To use it (requires sudo permission):

wget https://raw.githubusercontent.com/ShangjinTang/dotfiles/05ef87daae29475244c276db5d406b58c52be445/linux/ubuntu/22.04/bin/update-alternatives-clang
sudo bash ./update-alternatives-clang

Result:

[Adding alternative /usr/bin/clang-17 ...]
Master command: clang-17
Slave commands: amdgpu-arch-17 analyze-build-17 bugpoint-17 c-index-test-17 clang++-17 clang-apply-replacements-17 clang-change-namespace-17 clang-check-17 clang-cl-17 clang-cpp-17 clangd-17 clang-doc-17 clang-extdef-mapping-17 clang-format-17 clang-include-cleaner-17 clang-include-fixer-17 clang-linker-wrapper-17 clang-move-17 clang-offload-bundler-17 clang-offload-packager-17 clang-pseudo-17 clang-query-17 clang-refactor-17 clang-rename-17 clang-reorder-fields-17 clang-repl-17 clang-scan-deps-17 clang-tblgen-17 clang-tidy-17 count-17 diagtool-17 dsymutil-17 FileCheck-17 find-all-symbols-17 git-clang-format-17 hmaptool-17 intercept-build-17 ld64.lld-17 ld.lld-17 llc-17 lld-17 lldb-17 lldb-argdumper-17 lldb-instr-17 lldb-server-17 lldb-vscode-17 lld-link-17 lli-17 lli-child-target-17 llvm-addr2line-17 llvm-ar-17 llvm-as-17 llvm-bcanalyzer-17 llvm-bitcode-strip-17 llvm-cat-17 llvm-cfi-verify-17 llvm-config-17 llvm-cov-17 llvm-c-test-17 llvm-cvtres-17 llvm-cxxdump-17 llvm-cxxfilt-17 llvm-cxxmap-17 llvm-debuginfo-analyzer-17 llvm-debuginfod-17 llvm-debuginfod-find-17 llvm-diff-17 llvm-dis-17 llvm-dlltool-17 llvm-dwarfdump-17 llvm-dwarfutil-17 llvm-dwp-17 llvm-exegesis-17 llvm-extract-17 llvm-gsymutil-17 llvm-ifs-17 llvm-install-name-tool-17 llvm-jitlink-17 llvm-jitlink-executor-17 llvm-lib-17 llvm-libtool-darwin-17 llvm-link-17 llvm-lipo-17 llvm-lto-17 llvm-lto2-17 llvm-mc-17 llvm-mca-17 llvm-ml-17 llvm-modextract-17 llvm-mt-17 llvm-nm-17 llvm-objcopy-17 llvm-objdump-17 llvm-omp-device-info-17 llvm-omp-kernel-replay-17 llvm-opt-report-17 llvm-otool-17 llvm-pdbutil-17 llvm-PerfectShuffle-17 llvm-profdata-17 llvm-profgen-17 llvm-ranlib-17 llvm-rc-17 llvm-readelf-17 llvm-readobj-17 llvm-reduce-17 llvm-remark-size-diff-17 llvm-remarkutil-17 llvm-rtdyld-17 llvm-sim-17 llvm-size-17 llvm-split-17 llvm-stress-17 llvm-strings-17 llvm-strip-17 llvm-symbolizer-17 llvm-tapi-diff-17 llvm-tblgen-17 llvm-tli-checker-17 llvm-undname-17 llvm-windres-17 llvm-xray-17 modularize-17 not-17 nvptx-arch-17 obj2yaml-17 opt-17 pp-trace-17 run-clang-tidy-17 sancov-17 sanstats-17 scan-build-17 scan-build-py-17 scan-view-17 split-file-17 UnicodeNameMappingGenerator-17 verify-uselistorder-17 wasm-ld-17 yaml2obj-17 yaml-bench-17
[Adding alternative /usr/bin/clang-17: succeeded]

[Adding alternative /usr/bin/clang-18 ...]
Master command: clang-18
Slave commands: amdgpu-arch-18 analyze-build-18 bugpoint-18 c-index-test-18 clang++-18 clang-apply-replacements-18 clang-change-namespace-18 clang-check-18 clang-cl-18 clang-cpp-18 clangd-18 clang-doc-18 clang-extdef-mapping-18 clang-format-18 clang-include-cleaner-18 clang-include-fixer-18 clang-linker-wrapper-18 clang-move-18 clang-offload-bundler-18 clang-offload-packager-18 clang-pseudo-18 clang-query-18 clang-refactor-18 clang-rename-18 clang-reorder-fields-18 clang-repl-18 clang-scan-deps-18 clang-tblgen-18 clang-tidy-18 count-18 diagtool-18 dsymutil-18 FileCheck-18 find-all-symbols-18 git-clang-format-18 hmaptool-18 intercept-build-18 ld64.lld-18 ld.lld-18 llc-18 lld-18 lld-link-18 lli-18 lli-child-target-18 llvm-addr2line-18 llvm-ar-18 llvm-as-18 llvm-bcanalyzer-18 llvm-bitcode-strip-18 llvm-cat-18 llvm-cfi-verify-18 llvm-config-18 llvm-cov-18 llvm-c-test-18 llvm-cvtres-18 llvm-cxxdump-18 llvm-cxxfilt-18 llvm-cxxmap-18 llvm-debuginfo-analyzer-18 llvm-debuginfod-18 llvm-debuginfod-find-18 llvm-diff-18 llvm-dis-18 llvm-dlltool-18 llvm-dwarfdump-18 llvm-dwarfutil-18 llvm-dwp-18 llvm-exegesis-18 llvm-extract-18 llvm-gsymutil-18 llvm-ifs-18 llvm-install-name-tool-18 llvm-jitlink-18 llvm-jitlink-executor-18 llvm-lib-18 llvm-libtool-darwin-18 llvm-link-18 llvm-lipo-18 llvm-lto-18 llvm-lto2-18 llvm-mc-18 llvm-mca-18 llvm-ml-18 llvm-modextract-18 llvm-mt-18 llvm-nm-18 llvm-objcopy-18 llvm-objdump-18 llvm-opt-report-18 llvm-otool-18 llvm-pdbutil-18 llvm-PerfectShuffle-18 llvm-profdata-18 llvm-profgen-18 llvm-ranlib-18 llvm-rc-18 llvm-readelf-18 llvm-readobj-18 llvm-readtapi-18 llvm-reduce-18 llvm-remarkutil-18 llvm-rtdyld-18 llvm-sim-18 llvm-size-18 llvm-split-18 llvm-stress-18 llvm-strings-18 llvm-strip-18 llvm-symbolizer-18 llvm-tblgen-18 llvm-tli-checker-18 llvm-undname-18 llvm-windres-18 llvm-xray-18 modularize-18 not-18 nvptx-arch-18 obj2yaml-18 opt-18 pp-trace-18 run-clang-tidy-18 sancov-18 sanstats-18 scan-build-18 scan-build-py-18 scan-view-18 split-file-18 UnicodeNameMappingGenerator-18 verify-uselistorder-18 wasm-ld-18 yaml2obj-18 yaml-bench-18
[Adding alternative /usr/bin/clang-18: succeeded]

======================================================================
clang alternative is set to: /usr/bin/clang-18
======================================================================

Info:
  use 'sudo update-alternatives --config clang' to change default clang alternative
  use 'sudo update-alternatives --remove clang /usr/bin/clang-*' to delete a clang alternative
  use 'sudo update-alternatives --remove-all clang' to delete all clang alternatives

@amirsojoodi
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I had to add a bunch of other slaves to clang config, including clangd, clang-tidy, etc.

#!/usr/bin/env bash

#     --slave /usr/bin/$1 $1 /usr/bin/$1-\${version} \\

function register_clang_version {
    local version=$1
    local priority=$2

    update-alternatives \
         --verbose \
        --install /usr/bin/llvm-config          llvm-config          /usr/bin/llvm-config-${version} ${priority} \
        --slave   /usr/bin/llvm-ar              llvm-ar              /usr/bin/llvm-ar-${version} \
        --slave   /usr/bin/llvm-as              llvm-as              /usr/bin/llvm-as-${version} \
        --slave   /usr/bin/llvm-bcanalyzer      llvm-bcanalyzer      /usr/bin/llvm-bcanalyzer-${version} \
        --slave   /usr/bin/llvm-c-test          llvm-c-test          /usr/bin/llvm-c-test-${version} \
        --slave   /usr/bin/llvm-cat             llvm-cat             /usr/bin/llvm-cat-${version} \
        --slave   /usr/bin/llvm-cfi-verify      llvm-cfi-verify      /usr/bin/llvm-cfi-verify-${version} \
        --slave   /usr/bin/llvm-cov             llvm-cov             /usr/bin/llvm-cov-${version} \
        --slave   /usr/bin/llvm-cvtres          llvm-cvtres          /usr/bin/llvm-cvtres-${version} \
        --slave   /usr/bin/llvm-cxxdump         llvm-cxxdump         /usr/bin/llvm-cxxdump-${version} \
        --slave   /usr/bin/llvm-cxxfilt         llvm-cxxfilt         /usr/bin/llvm-cxxfilt-${version} \
        --slave   /usr/bin/llvm-diff            llvm-diff            /usr/bin/llvm-diff-${version} \
        --slave   /usr/bin/llvm-dis             llvm-dis             /usr/bin/llvm-dis-${version} \
        --slave   /usr/bin/llvm-dlltool         llvm-dlltool         /usr/bin/llvm-dlltool-${version} \
        --slave   /usr/bin/llvm-dwarfdump       llvm-dwarfdump       /usr/bin/llvm-dwarfdump-${version} \
        --slave   /usr/bin/llvm-dwp             llvm-dwp             /usr/bin/llvm-dwp-${version} \
        --slave   /usr/bin/llvm-exegesis        llvm-exegesis        /usr/bin/llvm-exegesis-${version} \
        --slave   /usr/bin/llvm-extract         llvm-extract         /usr/bin/llvm-extract-${version} \
        --slave   /usr/bin/llvm-lib             llvm-lib             /usr/bin/llvm-lib-${version} \
        --slave   /usr/bin/llvm-link            llvm-link            /usr/bin/llvm-link-${version} \
        --slave   /usr/bin/llvm-lto             llvm-lto             /usr/bin/llvm-lto-${version} \
        --slave   /usr/bin/llvm-lto2            llvm-lto2            /usr/bin/llvm-lto2-${version} \
        --slave   /usr/bin/llvm-mc              llvm-mc              /usr/bin/llvm-mc-${version} \
        --slave   /usr/bin/llvm-mca             llvm-mca             /usr/bin/llvm-mca-${version} \
        --slave   /usr/bin/llvm-modextract      llvm-modextract      /usr/bin/llvm-modextract-${version} \
        --slave   /usr/bin/llvm-mt              llvm-mt              /usr/bin/llvm-mt-${version} \
        --slave   /usr/bin/llvm-nm              llvm-nm              /usr/bin/llvm-nm-${version} \
        --slave   /usr/bin/llvm-objcopy         llvm-objcopy         /usr/bin/llvm-objcopy-${version} \
        --slave   /usr/bin/llvm-objdump         llvm-objdump         /usr/bin/llvm-objdump-${version} \
        --slave   /usr/bin/llvm-opt-report      llvm-opt-report      /usr/bin/llvm-opt-report-${version} \
        --slave   /usr/bin/llvm-pdbutil         llvm-pdbutil         /usr/bin/llvm-pdbutil-${version} \
        --slave   /usr/bin/llvm-PerfectShuffle  llvm-PerfectShuffle  /usr/bin/llvm-PerfectShuffle-${version} \
        --slave   /usr/bin/llvm-profdata        llvm-profdata        /usr/bin/llvm-profdata-${version} \
        --slave   /usr/bin/llvm-ranlib          llvm-ranlib          /usr/bin/llvm-ranlib-${version} \
        --slave   /usr/bin/llvm-rc              llvm-rc              /usr/bin/llvm-rc-${version} \
        --slave   /usr/bin/llvm-readelf         llvm-readelf         /usr/bin/llvm-readelf-${version} \
        --slave   /usr/bin/llvm-readobj         llvm-readobj         /usr/bin/llvm-readobj-${version} \
        --slave   /usr/bin/llvm-rtdyld          llvm-rtdyld          /usr/bin/llvm-rtdyld-${version} \
        --slave   /usr/bin/llvm-size            llvm-size            /usr/bin/llvm-size-${version} \
        --slave   /usr/bin/llvm-split           llvm-split           /usr/bin/llvm-split-${version} \
        --slave   /usr/bin/llvm-stress          llvm-stress          /usr/bin/llvm-stress-${version} \
        --slave   /usr/bin/llvm-strings         llvm-strings         /usr/bin/llvm-strings-${version} \
        --slave   /usr/bin/llvm-strip           llvm-strip           /usr/bin/llvm-strip-${version} \
        --slave   /usr/bin/llvm-symbolizer      llvm-symbolizer      /usr/bin/llvm-symbolizer-${version} \
        --slave   /usr/bin/llvm-tblgen          llvm-tblgen          /usr/bin/llvm-tblgen-${version} \
        --slave   /usr/bin/llvm-undname         llvm-undname         /usr/bin/llvm-undname-${version} \
        --slave   /usr/bin/llvm-xray            llvm-xray            /usr/bin/llvm-xray-${version}
        

    update-alternatives \
         --verbose \
        --install /usr/bin/clang                clang                /usr/bin/clang-${version} ${priority} \
        --slave   /usr/bin/clang++              clang++              /usr/bin/clang++-${version}  \
        --slave   /usr/bin/clang-format         clang-format         /usr/bin/clang-format-${version}  \
        --slave   /usr/bin/clang-cpp            clang-cpp            /usr/bin/clang-cpp-${version} \
        --slave   /usr/bin/clang-cl             clang-cl             /usr/bin/clang-cl-${version} \
        --slave   /usr/bin/clangd               clangd               /usr/bin/clangd-${version} \
        --slave   /usr/bin/clang-tidy           clang-tidy           /usr/bin/clang-tidy-${version} \
        --slave   /usr/bin/clang-check          clang-check          /usr/bin/clang-check-${version} \
        --slave   /usr/bin/clang-query          clang-query          /usr/bin/clang-query-${version} \
        --slave   /usr/bin/asan_symbolize       asan_symbolize       /usr/bin/asan_symbolize-${version} \
        --slave   /usr/bin/bugpoint             bugpoint             /usr/bin/bugpoint-${version} \
        --slave   /usr/bin/dsymutil             dsymutil             /usr/bin/dsymutil-${version} \
        --slave   /usr/bin/lld                  lld                  /usr/bin/lld-${version} \
        --slave   /usr/bin/ld.lld               ld.lld               /usr/bin/ld.lld-${version} \
        --slave   /usr/bin/lld-link             lld-link             /usr/bin/lld-link-${version} \
        --slave   /usr/bin/llc                  llc                  /usr/bin/llc-${version} \
        --slave   /usr/bin/lli                  lli                  /usr/bin/lli-${version} \
        --slave   /usr/bin/obj2yaml             obj2yaml             /usr/bin/obj2yaml-${version} \
        --slave   /usr/bin/opt                  opt                  /usr/bin/opt-${version} \
        --slave   /usr/bin/sanstats             sanstats             /usr/bin/sanstats-${version} \
        --slave   /usr/bin/verify-uselistorder  verify-uselistorder  /usr/bin/verify-uselistorder-${version} \
        --slave   /usr/bin/wasm-ld              wasm-ld              /usr/bin/wasm-ld-${version} \
        --slave   /usr/bin/yaml2obj             yaml2obj             /usr/bin/yaml2obj-${version}
        
}

register_clang_version $1 $2

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